Hawking and his team investigate technology trans- forming the idea of reality. Carin Bondar takes part in a remarkable 3D virtual training program created for the military; Aarathi Prasad tests a new system that maps locations inaccessible by GPS. Daniel Kraft investigates 3D bio-printing where computer designs can be turned into living tissue. Chris Eliasmith tests the latest in gaming technology – a breakthrough in virtual reality that promises the most immersive experience yet. And Jim Al-Khalili tests a computer that can read the human mind.